Adhesive tape cutter

ABSTRACT

An adhesive tape cutter includes a pair of fastening portions at the right and left sides such that both sides of an adhesive tape roll are enclosed by the fastening portions. The top of the fastening portions is fitted with an inclined resilient tongue and formed with a tape-guiding slot. A slide slot is formed in the side wall of the fastening portions in which a slider of a slide cap fits in such a way that a proper sliding action is achieved. Moreover, a plurality of resilient supports are integrally formed in a tape-receiving cavity defined by both of the fastening portions such that an adhesive tape roll may be constantly pushed by the resilient supports for creating a certain clamping relationship between the adhesive tape roll and the fastening portions.

BACKGROUND OF THE INVENTION

1. Fields of the Invention

The invention relates to an adhesive tape cutter, and more particularly, to an adhesive tape cutter that achieves a practical effect and ensures an easy operation.

2. Description of the Related Art

As shown in FIG. 10, a conventional adhesive tape cutter primarily includes a sleeve assembly 60 and a cutting blade 66. A compression piece 62 with a slim through hole 61, an adhesive tape gap 63, a supporting lug 64, and an inclined receptacle 65 for receiving the cutting blade 66 are disposed at the top of the sleeve assembly 60 such that an adhesive tape roll 67 is enclosed and its adhesive tape 68 can pass through the adhesive tape gap 63. In this way, the adhesive tape 68 can be cut off by the cutting blade 66.

The above-mentioned conventional structure can achieve the expected effect. However, this still has the following drawbacks:

1. When the adhesive tape roll 67 is installed such that the adhesive tape 68 passes through the adhesive tape gap 63, the adhesive tape 68 has to be curled in a strip shape for passing through the slim through hole 61 of the compression piece 62. It is obvious that the installation at the beginning is inconvenient.

2. The cutting blade 66 is fixed in an inclined upward position. This may do harm to the operating persons. Moreover, objects around in contact therewith may be scratched or damaged. A dust cover (not shown) can be employed for eliminating the above-mentioned drawbacks. However, the lifted dust cover may occupy more space, thereby affecting a smooth operation.

3. As well-known, any adhesive tape roll 67 becomes thinner after a long use. Therefore, the gap between the sleeve assembly 60 and the adhesive tape roll 67 will be gradually increased. As a result, the connection between the sleeve assembly 60 and the adhesive tape roll 67 can be achieved only by the stickiness of the adhesive tape 68. Therefore, the use must cause shaking and loosening phenomenon such that the adhesive tape 68 is detached from the adhesive tape gap 63 from time to time. The installation process must be carried out once again, thereby resulting in much trouble in use.

4. As depicted, when the adhesive tape 68 is pulled out too much and required to be rewound, the rewinding action of the adhesive tape 68 may not achieve a smooth surface of the rewound tape and may cause folds due to the shaking and loosening actions between the sleeve assembly 60 and the adhesive tape roll 67. As a result, it is difficult to take into account if the adhesive tape 68 after use is smoothly stuck to objects.

5. There is only a small space between the supporting lug 64 and the cutting blade 66 for the fingers of the user to extend thereinto for holding the adhesive tape 68 when the adhesive tape 68 is pulled out. Therefore, each user has to concentrate himself to hold the adhesive tape 68, thereby causing the operating inconvenience.

SUMMARY OF THE INVENTION

A primary object of the invention is to provide an adhesive tape cutter that includes a flat extending cutting blade that ensures an effective protection of users and objects from injury and damage. Meanwhile, a slider is employed to fold down the inclined tongues for a convenient storage. Furthermore, resilient supports are also employed for pushing against the adhesive tape roll 40 in such a manner that a constantly clamping relationship between the adhesive tape roll and the fastening portions is ensured. In this way, the adhesive tape roll and the fastening portions won't be shaken or loosened, thereby considerably increasing the operating convenience.

According to the invention, an adhesive tape cutter includes a pair of fastening portions at the right and left sides such that both sides of an adhesive tape roll are enclosed by the fastening portions. The top of the fastening portions is fitted with an inclined resilient tongue and formed with a tape-guiding slot. A slide slot is formed in the side wall of the fastening portions in which a slider of a slide cap fits in such a way that a proper sliding action is achieved. Moreover, a plurality of resilient supports are integrally formed in a tape-receiving cavity defined by both of the fastening portions such that an adhesive tape roll may be constantly pushed by the resilient supports for creating a certain clamping relationship between the adhesive tape roll and the fastening portions.

BRIEF DESCRIPTION OF THE DRAWINGS

The accomplishment of this and other objects of the invention will become apparent from the following description and its accompanying drawings of which:

FIG. 1 is an exploded perspective view of a first embodiment of an adhesive tape cutter in accordance with the invention;

FIG. 2 is a perspective assembly view of the first embodiment according to FIG. 1;

FIG. 3 is a side view of the embodiment according to FIG. 1;

FIG. 4 is a side view of the embodiment according to FIG. 3 in an operated state;

FIG. 5 is a side view of the embodiment according to FIG. 3 in a storage state;

FIG. 6 is a side view of a second embodiment of an adhesive tape cutter in accordance with the invention;

FIG. 7 is a side view of a third embodiment of an adhesive tape cutter in accordance with the invention;

FIG. 8 is a side view of a fourth embodiment of an adhesive tape cutter in accordance with the invention;

FIG. 9 is a side view of a fifth embodiment of an adhesive tape cutter in accordance with the invention; and

FIG. 10 is a perspective view of a conventional adhesive tape cutter.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

The present invention will now be described in more detail hereinafter with reference to the accompanying drawings that show various embodiments of the invention.

Referring to FIGS. 1 through 4, an adhesive tape cutter in accordance with a preferred embodiment of the invention includes a pair of fastening portions 10, 20, and a slide cap 30.

The fastening portions 10, 20 are formed in pair at the right and left sides and provided with a plurality of locking holes 11 and locking projections 21, respectively. The locking projections 21 fit into the locking holes 11 in such a manner that both sides of an adhesive tape roll 40 are enclosed. The top of the fastening portions 10, 20 is fitted with an inclined resilient tongue 12, 22 and formed with a tape-guiding slot 13, 23 adjacent to the inclined resilient tongue 12, 22. A slide slot 14, 24 is formed in the side wall of the fastening portions 10, 20 in which a slider 31 of the slide cap 30 fits in such a way that a proper sliding action is achieved and a more reliable locking of the fastening portions 10, 20 is ensured. A plurality of resilient supports 15, 25 are integrally formed in a tape-receiving cavity defined by both of the fastening portions 10, 20 such that the adhesive tape roll 40 may be constantly pushed by the resilient supports 15, 25 for creating a certain clamping relationship between the adhesive tape roll 40 and the fastening portions 10, 20.

The slide cap 30 includes a slider 31 corresponding to the slide slot 14, 24 at both side walls of the fastening portions 10, 20. A cutting edge 32 is formed at a position corresponding to the inclined resilient tongue 12, 22 of the fastening portions 10, 20. Meanwhile, an extension tongue 33 is formed at both sides of the cutting edge 32, respectively.

An easy assembly of the above-mentioned components and the adhesive tape roll 40 is shown in FIG. 4. The adhesive tape 41 is extended from the tape-guiding slots 13, 23 of the fastening portions 10, 20. The inclined resilient tongues 12, 22 have each an adhesive tape facing surface 121, 221 for creating a contact surface with the adhesive tape 41. At that time, the resilient supports 15, 25 are brought in a bent state. A constant clamping force acting on the 4 adhesive tape cutter and both fastening portions 10, 20 is created by use of the self-resilience of the resilient supports 15, 25. As shown in FIG. 2, a proper opening is formed in the inclined resilient tongues 12, 22 such that the operator may easily pull out the adhesive tape 41 with his fingers. Meanwhile, a smooth cutting of the pulled-out adhesive tape 41 takes place when the adhesive tape 41 is moved in direction to the cutting edge 32 in contact therewith.

In order to avoid an excessive adhesion of the adhesive tape 41 on the adhesive tape facing surface 121, 221 of the inclined resilient tongues 12, 22, an oily release paper (not shown) is attached to the adhesive tape facing surface 121, 221.

A proper clamping force is constantly maintained between the adhesive tape roll 40 and the fastening portions 10, 20. It is only required to move the fastening portions 10, 20 in a reverse direction relative to the adhesive tape roll 40 when the adhesive tape 41 is excessively pulled out by mistake. In this way, the excessive adhesive tape 41 can be rewound to avoid an unnecessary waste.

As shown in FIG. 5, the slide cap 30 is only required to shift in direction to the inclined resilient tongues 12, 22 for the storage. In this way, the inclined resilient tongues 12, 22 can be swiveled downward by the extension tongue 33 in a hidden storage position. Moreover, the cutting edge 32 is not in contact with the adhesive tape 41 and the inclined resilient tongues 12, 22. To the contrary, the slide cap 30 is released in a reverse direction for the operation purpose. In this way, the inclined resilient tongues 12, 22 will be returned by their self-resilience back to their original inclined position for an easy pull-out of the adhesive tape 41.

As described above, the pull-out of the adhesive tape 41 takes place in the following steps. First of all, the slide cap 30 is released for an automatic spring-up of the inclined resilient tongues 12, 22. Then, the adhesive tape 41 is properly pulled out. Thereafter, the slide cap 30 is pushed back to swivel both of the inclined resilient tongues 12, 22 downward. At last, the adhesive tape 41 is moved in direction to the cutting edge 32 in contact therewith for cutting off the adhesive tape 41.

According to the same design principle, the resilient supports 15, 25 can be integrally extended downward from the top of the fastening portions 10, 20 (see FIG. 6). Alternatively, the resilient supports 15, 25 can be integrally extended upward from the bottom of the fastening portions 10, 20 (see FIG. 7). Both of the variants may achieve the same expected effect.

FIG. 8 illustrates another embodiment of the adhesive tape cutter in accordance with the invention. A strip-shaped support 16 is integrally extended linearly from the bottom of the fastening portions 10, 20, respectively, such that the strip-shaped supports 16 are brought in a curved shape due to the self curvature form of an adhesive tape roll 40 when the strip-shaped support 16 and the adhesive tape roll 40 are assembled together. In this way, the same supporting effect is achieved as well.

In fact, the expected cutting effect is also achieved only by two fastening portions. As shown in FIG. 9, a right fastening portion 50 and a left fastening portion 50 are attached to each other such that both sides of an adhesive tape roll 40 are enclosed by the fastening portions 50. An inclined resilient tongue 51 and a tape-guiding slot are positioned at the top of the fastening portions 50. Meanwhile, a cutting edge 53 is formed in the proximity of the rear end of the inclined resilient tongue 51.

Many changes and modifications in the above-described embodiments of the invention can, of course, be carried out without departing from the scope thereof. Accordingly, to promote the progress in science and the useful arts, the invention is disclosed and is intended to be limited only by the scope of the appended claims. 

1. An adhesive tape cutter; comprises a pair of fastening portions and a slide cap, wherein the fastening portions are in pair at the right and left sides, and one fastening portion provided with a plurality of locking holes and the other fastening portion provided with a plurality of locking projections; respectively such that the locking projections fit into the locking holes and both sides of an adhesive tape roll are enclosed, a top of each fastening portion is fitted with an inclined resilient tongue and formed with a tape-guiding slot adjacent to the inclined resilient tongue, a slide slot is formed in a side wall of each fastening portions in which a slider of the slide cap fits in such a way that a proper sliding action is achieved, a plurality of resilient supports are integrally formed in a tape- receiving cavity defined by both of the fastening portions such that an adhesive tape roll may be constantly pushed by the resilient supports for creating a clamping relationship between the adhesive tape roll and the fastening portions, a cutting edge is formed on the slide cap and at a position corresponding to the inclined resilient tongue of the fastening portions, and an extension tongue is formed on the slide cap and at both sides of the cutting edge respectively, such that when the slide cap is shifted in a direction to the inclined resilient tongues, the inclined resilient tongues are swiveled downward by the extension tongues in a hidden storage position so that the cutting edge is not in contact with the adhesive tape and the inclined resilient tongues, and when the slide cap is released in a reverse direction, the inclined resilient tongues is returned by their self-resilience back to their original inclined position for an easy pull-out of the adhesive tape.
 2. The adhesive tape cutter as claimed in claim 1, wherein an opening is formed in the inclined resilient tongues such that the operator may easily pull out the adhesive tape with his fingers. 3-8. (canceled) 